NC凭证接口（Java发送流和处理返回结果）

问题描述：

　　金融行业在系统模块分为财务和业务两个系统，我公司是负责业务模块系统，NC公司负责财务系统。但是财务有时候需要生成凭证，这时候就涉及业务模块了，我方就需要写NC凭证接口。这时候就需要三方交互好，确定规则。简单的说，就是我方发送一个正确的一个XML格式的字符给NC公司，然后NC公司会判断这个XML是不是符合规则，返回一个xml格式结果。好了，不多说，其实就是写一个Java代码，发送xml格式流和获取返回的xml格式的结果处理。

     public String checkNCSendPzFlag(String sendXML) throws Exception {
         String result = "";//returne标识
         try {
             /*********将xml发送到目标服务器*****************/
             //将xml保存在本地文件夹
             String path = "F:\\xml_voucher\\IMP\\NC.xml";
             File file = new File("F:\\xml_voucher\\IMP");
             file.mkdirs();//创建父文件夹
             File f2 = new File(path);
             f2.createNewFile();
             FileOutputStream fos = new FileOutputStream(f2);
             fos.write(sendXML.getBytes("utf-8"));//写入并设置编码格式
             fos.flush();
             fos.close();

             //获取Servlet连接并设置请求的方法
             String url = "http://10.68.3.5:8020/service/XChangeServlet?account=04&groupcode=1";//NC接口地址
             URL realURL = new URL(url);
             HttpURLConnection connection = (HttpURLConnection) realURL
                     .openConnection();
             connection.setDoOutput(true);
             connection.setRequestProperty("Content-type", "text/xml");
             connection.setRequestMethod("POST");

             //将Document对象写入连接的输出流中
             BufferedOutputStream out = new BufferedOutputStream(connection
                     .getOutputStream());
             BufferedInputStream input = new BufferedInputStream(
                     new FileInputStream(path));
             int length;
             byte[] buffer = new byte[1000];
             while ((length = input.read(buffer, 0, 1000)) != -1) {
                 out.write(buffer, 0, length);
             }
             input.close();
             out.close();

             /***************从连接的输入流中取得回执信息***************/
             //输入流获取返回的xml，写入Document
             InputStream inputStream = connection.getInputStream();
             InputStreamReader isr = new InputStreamReader(inputStream, "utf-8");
             BufferedReader bufreader = new BufferedReader(isr);
             String xmlString = "";
             int c;
             while ((c = bufreader.read()) != -1) {
                 System.out.print((char) c);
                 xmlString += (char) c;
             }
             input.close();
             Document resDoc = DocumentHelper.parseText(xmlString);

             /************对回执结果的后续处理…************/
             //document转化为xml，并保存
             TransformerFactory tFactory = TransformerFactory.newInstance();
             Transformer transformer = tFactory.newTransformer();
             DocumentSource source = new DocumentSource(resDoc);
             transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
             //设置文档的换行与缩进
             transformer.setOutputProperty(OutputKeys.INDENT, "YES");
             //设置日期格式
             SimpleDateFormat fmt = new SimpleDateFormat("yyyyMMddHHmmss");
             String resFile = "E:\\用友\\回执目录\\BkMsg_会计凭证_"
                     + fmt.format(new Date()) + ".xml";
             File resDis = new File("E:\\用友\\回执目录\\");
             if (!resDis.exists())
                 resDis.mkdirs();
             StreamResult results = new StreamResult(new File(resFile));
             transformer.transform(source, results);

             //jdom解析XML
             SAXBuilder builder = new SAXBuilder();
             org.jdom.Document doc = builder.build(new File(resFile));
             Element foo = doc.getRootElement();
             List allChildren = foo.getChildren();
             for (int i = 0; i < allChildren.size(); i++) {
                 System.out.println(" 发送状态:"
                         + ((Element) allChildren.get(i)).getChild("resultcode").getText());
                 System.out.print("测试信息"
                         + ((Element) allChildren.get(i)).getChild("resultdescription").getText());
             }

             if (((Element) allChildren.get(0)).getChild("resultcode").getText()
                     .equals("1")) {
                 result = "导入成功!";
             } else {
                 result = "导入失败:"
                         + ((Element) allChildren.get(0)).getChild(
                                 "resultdescription").getText();
             }
         } catch (Exception e) {
             // TODO: handle exception
             result = "导入失败" + e.getMessage();
             e.printStackTrace();
         }
         return result;
     }